i work in a truck repair shop so i got to expitiment a little
a nlgi #2 hight temp seems to work the best fot high speed parts like wheelbearings and u joints but unless its a moly it tends to "dry out" on slower parts like tie rods and ball joints
plain grease works really well on biger contact areas that dont se much pressure like clutch linkage and the like
but for slower moving parts get a moly.
the best grease ive seen so far that works good on everything is cenex high temp moly